It's funny that you don't see what you're doing while you're doing it. All we know is that Jerry has hired good and bad people to be coaches. Jerry could have remained exactly the same as he's always been, and the results are going to be different when Bill Parcells is running your program as opposed to Dave Campo. Big effing surprise. But instead of just roll with that, you've invented this imaginary scenario in your butt where the amount of control Jerry exerts ebbs and flows based on the personality of his head coach, which is a theory that may be popular but it is supported by poop.
Has anyone ever told you that you sound alot like Hostile?
As for the coaching hires, yes, of course there will be a difference between having coaches like Jimmy/Parcells who have power over their staffs and personnel and hiring guys like Gailey/Campo/etc. That's the whole point. Jerry hired coaches like the latter and gave them no power for a reason, so he himself could be in control and not get out-spotlighted like he did when Jimmy was here.
You really think Jerry thought that Gailey and Campo were the best coaches he could hire? Of course not. He hired them because they didn't have huge egos or require the power that a Jimmy or Parcells type coach would demand. Therefore Jerry could force assistants on them and control the personnel and pull all the strings. That's the entire point. When Jerry did this with him having full power and hiring the weaker HC's we suffered. When he stepped back and hired strong HC's like Jimmy and Parcells and gave them power over their staffs and personnel, then the franchise turned around and started having success.
So you can deny it if you want, but it's not going to change the reality of the situation.